ABAP Select data from SAP table J_7LKS2 into internal table

Get Example source ABAP code based on a different SAP table
  Get ABAP code

Below is a number of ABAP code snippets to demonstrate how to select data from SAP J_7LKS2 table and store it within an internal table, including using the newer @DATA inline declaration methods. It also shows you various ways to process this data using ABAP work area, inline declaration or field symbols including executing all the relevant CONVERSION_EXIT routines specific to J_7LKS2. See here for more generic Select statement tips.

Sometimes data within SAP is stored within the database table in a different format to what it is displayed to the user. These input/output conversation FM routines are what translates the data between the two formats.

There is also a full declaration of the J_7LKS2 table where each field has a char/string type for you to simply copy and paste. This allows you to use processing that is only available to these field types such as the CONCATENATE statement.

DATA: IT_J_7LKS2 TYPE STANDARD TABLE OF J_7LKS2,
      WA_J_7LKS2 TYPE J_7LKS2,
      GD_STR TYPE STRING.

DATA: lo_typedescr type REF TO cl_abap_typedescr.
DATA: lv_fieldname type fieldname.

FIELD-SYMBOLS: <FIELD> TYPE any.
FIELD-SYMBOLS: <J_7LKS2> TYPE J_7LKS2.

*Process all fields in table header/work area as string values
  PERFORM process_as_string_field_values CHANGING wa_J_7LKS2.

SELECT *
*restrict ABAP select to first 10 rows
 UP TO 10 ROWS      
  FROM J_7LKS2
  INTO TABLE IT_J_7LKS2.

*Select data and declare internal table using in-line method @DATA
*SELECT *
*  FROM J_7LKS2
*  INTO TABLE @DATA(IT_J_7LKS22).
*--Further methods of using ABAP code to  select data from SAP database tables

*You can also declare the header/work area using the in-line DATA declaration method
READ TABLE IT_J_7LKS2 INDEX 1 INTO DATA(WA_J_7LKS22).


*Demonstrate how to loop at an internal table and update values using a FIELD-SYMBOL
LOOP AT IT_J_7LKS2 ASSIGNING <J_7LKS2>.

*To update a field value using a field symbol simply change the value via the field symbol pointer
<J_7LKS2>-MANDT = 1.
<J_7LKS2>-STOFI = 1.
<J_7LKS2>-STOKTX1 = 1.
<J_7LKS2>-STOKTG1 = 1.
<J_7LKS2>-STOKL1 = 1.

ENDLOOP.

LOOP AT IT_J_7LKS2 INTO WA_J_7LKS2.
*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Write selected data to screen/report before conversion.
  WRITE:/ sy-vline,   WA_J_7LKS2-GSTFN1, sy-vline,
  WA_J_7LKS2-GEWEI1, sy-vline,
  WA_J_7LKS2-DATAB1, sy-vline,
  WA_J_7LKS2-DATBI1, sy-vline,
  WA_J_7LKS2-LVORM1, sy-vline,
  WA_J_7LKS2-STOFF, sy-vline.
ENDLOOP.
   
*Add any further fields from structure WA_J_7LKS2 you want to display...

  WRITE:/ sy-uline.
* Aternatively use generic code to Write field values (and NAME) to screen report
  DO.
    ASSIGN COMPONENT sy-index OF STRUCTURE wa_J_7LKS2 TO <field>.
    IF sy-subrc <> 0. EXIT. ENDIF.
    WRITE:/ 'Field Value', <field>, sy-vline.
    gd_str = <field> .
    lo_typedescr ?= CL_ABAP_DATADESCR=>DESCRIBE_BY_DATA( <field> ).
    lv_fieldname = lo_typedescr->GET_RELATIVE_NAME( ).
    WRITE:/ 'Field Name', lv_fieldname.
  ENDDO.

  
*Redo loop but convert all fields from internal to out value  
LOOP AT IT_J_7LKS2 INTO WA_J_7LKS2.


*Write horizonal line to screen report.
  WRITE:/ sy-uline.

*Convert all fields to display/output versions using conversion routines
  PERFORM convert_all_field_values CHANGING wa_EKKO.
	 
ENDLOOP.

  
*&---------------------------------------------------------------------*
*& Form convert_all_field_values
*&---------------------------------------------------------------------*
FORM convert_all_field_values CHANGING p_EKKO LIKE wa_EKKO.
DATA: ld_input(1000) TYPE c, ld_output(1000) TYPE C.

*Conversion exit MATN3, internal->external for field GSTFN1
CALL FUNCTION 'CONVERSION_EXIT_MATN3_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKS2-GSTFN1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKS2-GSTFN1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI1
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKS2-GEWEI1
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKS2-GEWEI1.
WRITE:/ 'New Value:', ld_input.

*Conversion exit ALPHA, internal->external for field ENTNR
CALL FUNCTION 'CONVERSION_EXIT_ALPHA_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKS2-ENTNR
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKS2-ENTNR.
WRITE:/ 'New Value:', ld_input.

*Conversion exit MATN3, internal->external for field GSTFN2
CALL FUNCTION 'CONVERSION_EXIT_MATN3_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKS2-GSTFN2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKS2-GSTFN2.
WRITE:/ 'New Value:', ld_input.

*Conversion exit CUNIT, internal->external for field GEWEI2
CALL FUNCTION 'CONVERSION_EXIT_CUNIT_OUTPUT'
  EXPORTING
    input =                      WA_J_7LKS2-GEWEI2
  IMPORTING
    output =                     ld_input.
WRITE:/ 'Org Value:', WA_J_7LKS2-GEWEI2.
WRITE:/ 'New Value:', ld_input.
ENDFORM. 

*&---------------------------------------------------------------------*
*& Form process_as_string_field_values
*&---------------------------------------------------------------------*
FORM process_as_string_field_values CHANGING p_EKKO LIKE wa_EKKO.

TYPES: BEGIN OF T_J_7LKS2_STR, 
MANDT TYPE STRING,
STOFI TYPE STRING,
STOKTX1 TYPE STRING,
STOKTG1 TYPE STRING,
STOKL1 TYPE STRING,
GSTFN1 TYPE STRING,
GEWEI1 TYPE STRING,
DATAB1 TYPE STRING,
DATBI1 TYPE STRING,
LVORM1 TYPE STRING,
STOFF TYPE STRING,
STOKTX2 TYPE STRING,
STOKTG2 TYPE STRING,
ENTNR TYPE STRING,
ENTNA TYPE STRING,
NAME1 TYPE STRING,
LAND1 TYPE STRING,
BUKRS TYPE STRING,
STOKL2 TYPE STRING,
GSTFN2 TYPE STRING,
GEWEI2 TYPE STRING,
DATAB2 TYPE STRING,
DATBI2 TYPE STRING,
LVORM2 TYPE STRING,
DATAB3 TYPE STRING,
DATBI3 TYPE STRING,
LVORM3 TYPE STRING,END OF T_EKKO_STR.
DATA: WA_J_7LKS2_STR type T_EKKO_STR.

DATA: ld_text TYPE string.

LOOP AT IT_EKKO INTO WA_EKKO.
  MOVE-CORRESPONDING wa_EKKO TO WA_EKKO_STR.
  CONCATENATE: sy-vline
WA_J_7LKS2_STR-MANDT sy-vline 
WA_J_7LKS2_STR-STOFI sy-vline 
WA_J_7LKS2_STR-STOKTX1 sy-vline 
WA_J_7LKS2_STR-STOKTG1 sy-vline 
WA_J_7LKS2_STR-STOKL1 sy-vline 
WA_J_7LKS2_STR-GSTFN1 sy-vline 
WA_J_7LKS2_STR-GEWEI1 sy-vline 
WA_J_7LKS2_STR-DATAB1 sy-vline 
WA_J_7LKS2_STR-DATBI1 sy-vline 
WA_J_7LKS2_STR-LVORM1 sy-vline 
WA_J_7LKS2_STR-STOFF sy-vline 
WA_J_7LKS2_STR-STOKTX2 sy-vline 
WA_J_7LKS2_STR-STOKTG2 sy-vline 
WA_J_7LKS2_STR-ENTNR sy-vline 
WA_J_7LKS2_STR-ENTNA sy-vline 
WA_J_7LKS2_STR-NAME1 sy-vline 
WA_J_7LKS2_STR-LAND1 sy-vline 
WA_J_7LKS2_STR-BUKRS sy-vline 
WA_J_7LKS2_STR-STOKL2 sy-vline 
WA_J_7LKS2_STR-GSTFN2 sy-vline 
WA_J_7LKS2_STR-GEWEI2 sy-vline 
WA_J_7LKS2_STR-DATAB2 sy-vline 
WA_J_7LKS2_STR-DATBI2 sy-vline 
WA_J_7LKS2_STR-LVORM2 sy-vline 
WA_J_7LKS2_STR-DATAB3 sy-vline 
WA_J_7LKS2_STR-DATBI3 sy-vline 
WA_J_7LKS2_STR-LVORM3 sy-vline      INTO ld_text SEPARATED BY SPACE.

*Add any further fields from structure WA_EKKO_STR you want to CONCATENATE...
ENDLOOP.
ENDFORM.